apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch-logging
  namespace: logging
  labels:
    k8s-app: elasticsearch-logging
    version: {{ elasticsearch_img_version }}
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  serviceName: elasticsearch-logging
  replicas: 2
  selector:
    matchLabels:
      k8s-app: elasticsearch-logging
      version: {{ elasticsearch_img_version }}
  template:
    metadata:
      labels:
        k8s-app: elasticsearch-logging
        version: {{ elasticsearch_img_version }}
        kubernetes.io/cluster-service: "true"
    spec:
      tolerations:
      - key: CriticalAddonsOnly
        operator: Exists
      - effect: NoSchedule
        key: node-role.kubernetes.io/master
      serviceAccountName: elasticsearch-logging
      priorityClassName: system-cluster-critical
      initContainers:
      - image: alpine:3.6
        command: ["/sbin/sysctl", "-w", "vm.max_map_count=262144"]
        name: elasticsearch-logging-init
        securityContext:
          privileged: true
      containers:
      - image: {{ imageRepository }}/elasticsearch:{{ elasticsearch_img_version }}
        name: elasticsearch-logging
        resources:
          # need more cpu upon initialization, therefore burstable class
          limits:
            cpu: 1000m
          requests:
            cpu: 100m
        ports:
        - containerPort: 9200
          name: db
          protocol: TCP
        - containerPort: 9300
          name: transport
          protocol: TCP
        volumeMounts:
        - name: elasticsearch-logging
          mountPath: /data
        env:
        - name: "NAMESPACE"
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: MINIMUM_MASTER_NODES
          value: "1"
      volumes:
      - name: elasticsearch-logging
        emptyDir: {}
      # Elasticsearch requires vm.max_map_count to be at least 262144.
      # If your OS already sets up this number to a higher value, feel free
      # to remove this init container.
